San Mateo is a city located in San Mateo County California. With a 2020 population of 107,351, it is the 70th largest city in California and the 316th largest city in the United States. San Mateo is currently growing at a rate of 0.79% annually and its population has increased by 1.60% since the most recent census, which recorded a population of 105,661 in 2020. Spanning over 16 miles, San Mateo has a population density of 8,820 people per square mile.
The average household income in San Mateo is $165,420 with a poverty rate of 7.85%. The median rental costs in recent years comes to $2,658 per month, and the median house value is $1.19 Mn. The median age in San Mateo is 38.2 years, 36.5 years for males, and 40 years for females.
According to the most recent ACS, the racial composition of San Mateowas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among white people with a rate of 97.73%.
The highest rate of bachelors degrees is among asian people with a rate of 73.66%.
57.38% of San Mateo residents speak only English, while 42.62% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 18.19% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in San Mateo is Islander, with 18.37% below the poverty level.
The race least likely to be in poverty in San Mateo is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.35%. Among those working part-time, it was 8.65%, and for those that did not work, the poverty rate was 18.60%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in San Mateo
65.04% of San Mateo residents were born in the United States, with 47.15% having been born in California. 17.49% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.